Revisión del 14:48 11 jul 2018

Guest editors: Tomasz Andrysiak, UTP University of Science and Technology in Bydgoszcz, Poland, Manuel Graña, UPV/EHU University of the Basque Country, Spain, Jörg Keller, FernUniversität in Hagen, Germany and Rafal Kozik, UTP University of Science and Technology in Bydgoszcz, Poland. March 2019. Call for papers.